Crankcase oil thrower and crankpin lubricating device



Sept. 14, 1948. e, HOBART 2,449,227

CRANKCASE OIL THROWER AND CRANK PIN LUBRICATING DEVICE Filed Jan. '25,1945 FIG.|.

43 INVENTOR.

FRANKLIN G. HOBART ax/QM ATTORNEY Patented Sept. 14, 1948 CRANKCASE OILTHROWER AND CRANK PIN LUBRICATIN G DEVICE Franklin G. Hobart,Beloit,Wis., assignor to Fairbanks, Morse & (30., Chicago, 111,, acorporation of Illinois Application January 25, 1945, Serial No; 574,504a This invention relates to improvements afiording positive lubricationof engine crank pins and the like, and has reference more particularly,to a, device for application to a connecting rod, to scoop or splashlubricant within the engine crankcase, and to deliver lubricant to thecrankpin.

The principal object of the present invention resides in the provisionof an improved device adapted for application to the connecting rod ofan engine or the like, which is effective in connection with a body oflubricant in the engine crankcase, to splash lubricant from said bodythroughout the crankcase, and to direct and deliver lubricant to thebearing surfaces of the crankpin.

Another object is attained in the provision of a device of the characterindicated, which is of a unitary construction providing a body elementadapted for securement between the crankpin bearing end of theconnecting rod and a bearing cap secured thereto, and so constructed asto form a channel leading to the surface of the crankpin, and the devicefurther having a projection from the body portion, adapted for dippinginto a crankcase body of lubricant to scoop lubricant therefrom forsplash lubrication of operating elements in the crankcase, and providinga guide surface serving to direct lubricant from the crankcase body oflubricant to and through the channel to the crankpin surface.

Further objects and advantages provided by the present invention, willappear readily from the following description of a preferred embodimentthereof, as illustrated by the accompanying drawing, wherein:

Fig. 1 is a longitudinal sectional elevation through the crankcase zoneand a part of the cylinder and piston assembly of an engine,illustrating the application of the presently improved oiling device tothe connecting rod and crankpin journal;

Fig. 2 is a fragmentary sectional elevation as viewed from line 2-2 inFig. 1, and

Fig. 3 is an enlarged view of the improved device.

Referring now to the drawing by suitable char actors of reference, thepresent device is shown in application to an engine of horizontalcylinder type, providing a crankcase ID to which is secured inhorizontal position, an engine cylinder ll having a piston l2reciprocable therein. The engine crankshaft is shown at M, providinga'crankpin I5 to which the connecting rod I6 is operatively connected,as by ,a bearing half 10 Claims. (01. 184- 13) 2 l8 formed atthecrankend of connecting rod l6, and a bearing cap [9 secured to rod.bearing half l8 by suitable bolts 29. According to the presentillustration, the cap is secured. by two bolts, one at each side of thecap. Also, the rod parts l8 and I 9.may have babbitt lining cast orotherwise. secured in each, or other removable liners may be employedtherein as desired, such being indicated at 2! in the drawing. The lowerzone 22 of crankcase Ill, is adapted to contain a body of lubricantindicated at 23, and lubricant is delivered therefrom into an oil pan 24secured to the crankcase bottom wall 25, as through an opening 21 in awall of the oil pan. The capacity of opening 21 is determined to be suchas to allow a rate of oil flow into the pan sufilcient to provide enoughoil therein during engine operation, for the efficient operation of thepresently improved oiling device.

Splash-lubrication of the moving engine parts (not shown) Within thecrankcase, as well as positive lubrication of the crankpin, is affordedby an improved device 28, arranged as shown in Fig. 1, on the side ofthe crankpin facing the oil pan 24, and mounted between the rod hearingend l8, and. cap IS, the device projecting therefrom in a position todip into the lubricant in pan 24 during, crankshaft rotation, so as todisperse lubricant therefrom upwardly and through the interior of thecrankcase ill. The device according to, the present improvements, isformed from suitable sheet metal stock of redetermined thickness orgauge, and provides a planar body portion 3|] adapted for location between the rod bearing l8 andcap l9, and a centrally located aperture 3|to receive theret'hrough, one of the crank-rod journal securing bolts20. Extending laterally from opposite sides of body 30 and coplanartherewith, are projections or wing-like portions 32, each of whichsupports thereon a plate-like element 34. The elements 34 which may besecured to wing portions 32 in any suitable manner, as by spot-welding,serve with the body 30 to define between the cap and rod bearing end achannel 35 opening at its inner end 36, to the surface of the crank pinl5 (Fig. 2). The inner opposed margins 33 of the members 34 areofangulate trend as shown, so that channel 35 defined thereby,'is oftapered extent, converging at the inner open end 36. It will be notedthat. in assembly, with bolt 20 extended through body opening 3|, thebolt serves to define opposite passages 38 in the channel 315. Extendingfrom 'bodyportion 30 and laterally of the crank pin connection, is a,dipper portion .39

' I Briefly describing the functionv otithetpresent- 1y improved device,upon crankshaftbrotatiom the dipper arms 42 will enter and pass'through'V the lubricant in pan 24, andziin doingitsop wi-llserve to displacelubricant*from the parrf as by scooping and splash-displacement, intothe regions of the crankcase l0 above::pan 24 for effecting lubricationof engine parts therein (not shown). curvature of dipper arms 42 in thedirection of the crankshaft rotation:antappreciablequantity of lubricantwill be thereby, directed .zupwardly alongithe directing surfaces=44 of.theidippen arms, to' and through the passages .38? an'd -chami'el' 35to the zone .ofncrank pin 1 5,1: wherebyzlubricant A will be thus :1delivered ima: positiverrmanner;. to thei-rbearing surfaces defined:bythe 'engagingsurfaces. of the crank .:pin 4 Stand: the bearing liners2 I. In. order toassist the Lfi'OWDfJllbliCfiltillg oil along the .surfaces of' crank Ipin' l 5 and-liners 2 i, the liners maybe-notched or":channeledilongitudinaH 'fi of each, as'sindicatedi: at' 45 int Fig. 1,and :in broken lines in -Fig. 2."

As is: common practice with crank-pin conn'ections of the characterdes'cribed, the--bearing cap I 9 is centered with respect to the rodbearing endl8, and held against lateral-or angul'ar di'splacement, bysuitable pins' or dowelsiAB indicated in Fig. 2, one' -near each-endof-fthe cap with" its ends seating in "the cap-*and -rod" bearingend-I8. In-'-order to accommodate'these pins, the oiling device' isapertured-as -at-'4l,-' in the body wing portions'32 and associated"plate elements 34, through-which the pins or dowels pass.

The'cap dowels projecting through the wing portions-of the oilingdevice,-thus'=also anoma means for preventing lateral or angula'rshifting of the device; as is now apparent:

A further advantageoffered-by"the presently improved oiling'jdevic'e,isfound-in the utilityof the body structure; comprised of the portion"and the elements 34 superposedonthebbdy'wing portions 32,- as a shimcoacting'witlr a shim-or shims 48 at the opposite side. ofthe*journ'aljfor properlyspacingthe cap 'l9' and rodend l8. Thecap-rodspaclng may be further -controlld, of course; '-by the"application ofadditional' 'shims onboth sides of the journal Withfurther" regard "tozthe channel-defining plate elements 34 "on the body:wing' portions-32, while it is 'presentlypreferredtdf'o'rm' these" asseparate elements; and to "secure-them.ini'assem bly on wing portions 32as "by; spot weldingfiit will appear readily,:,.th'at"the'elem'entsrmayybe integral with. the body wings 32. Ir'r'siichiiiistance, each may 'be provided'as an extensionpf wing portion: 32," andthen ibent unturned-over into overlying. engagementtrwith.theiwing p'ortions.

The. presently; improved I oiling device as will now appear, providesfor effective splashing "of lubricant. within the engine "crankcase so"as'to lubricate operating; parts "therein, and affords At the same time,by reason 'of 'the positive d'elivery'of'lubricantdirectlyjto'the crank4 scribed, which may be readily applied to existing engines, inreplacement of shims between the bearing cap and connecting rod bearingend at one side of the journal connection.

Having now described the presently improved oiling device and the mannerof its operation,

I claim asv my invention; the." following:

1. In an engine providing a crankcase having a body of lubricanttherein, a crankshaft having a crank pin, and a piston connecting rodhaving a journal connection with the crank pin, pro-'videdby='abearing-half at the crank end of the rod, and a bearing capsecured to the rod bearing- 'halffthecombination with said crank pinconnection; ofcm'eans for effecting lubrication thereof fromthe'crankcase body of lubricant, comprising: a :member' providing a bodyportion 10- catedbetween the rod bearing-half and cap,

means carried by said body portion and including relatively spacedplate-like elements, defining with saidb'ody portion achannel'extendingto the surface of the crank pin,-aiid*a dipper-portion projecting fromsaid 'body'portion in a position' to dip into said crankcase bodyofliibri cant upon crankshaft rotation, said dipper, portion beingadapted to direct and guide lubricant from said lubricant body, into andthrough said channel to the crank pin surface.

'2. In anengine including a crankcase having a body of lubricanttherein, a crankshaft'provi'd ing 'a crank pin, and a. pistonconnecting1ro'd having a *bearing-halfat the crank endof the rod; abearing cap, and 'bolts securing'the cap androd bearing-half in"assemblyto'the crank-pin, the combinationwith 'sai'd*crankpinconnection, of means for effecting lubrication thereof from thecrankcase body; of "lubricant, comprising a member providing la'planarbody portion disposed between the rod'bearing-half and cap, the bodyportion being apertured to receive. therethrough' at least. one i ofsaid secur ing bolts, means including plate-like elements relativelyspaced on and: cooperating'withrsaicl body portion to define anopenchannel extending to the' surface. of the crank pin, and adibperportion" projecting from the bodyfijpo'rtion' a position'to'dip intosaid'crankcasebodvof lubri cant uponcr anksh'aft' rotation, said dipperportion being adapted. to direct andguide lubricant from'said lubricant'body,into and throughsaid channelto thecrank'pin surface.

3.'.'In.an"enginehaving a crankcase containing aibodyof lubricanttherein, a crankshaftfiprovidinga crank" pin; apiston connecting rodhav-. ing a crank pin bearing 'ha'lf at the 'crankJend thereof, andabearingcap securdtoith'erod bearingaha'lf to: complete the. journalconnection ofi'therod and crank pin, the combination with said' journalconnection, of amember seated'between the rod bearing-half'and cap;said. member providing a" dipper "portion extending therefrom in aposition .to pass through said-body oflub ricant in each revolution. of'the crankshaft, to effect splash 'displacement of the lubricanttin thecrankcase; said member'in the portion thereof seatedbetween the rodbearing-half-andlcap, having lateral projections thereon, platelikeele.-.- ments' on said lateral projection cooperating withsaid"member.to "define a channel; extending to thefisurface of the-crankpin; and .saldfdipper portion. of; the member providing a. guide surfaceeffective as the dipper. portionjpasses. through the body of lubricant,to. deliver'lubricantto and through said "channel? to" the 'crank'gpin-surface forlubricattidn of thecrank'pin;

4. in an engine having a crankcase containing a body of lubricanttherein, a crankshaft providing a crank pin, a piston connecting rodhaving a crank pin bearing-half at the crank end thereof, a rod bearingcap, a pair of bolts securing said cap and rod bearing half in operativeconnection with said crank pin, and a dowel extending into said bearinghalf and bearing cap, the combination with said crank pin-rodconnection, of a lubricant feeding member providing a planar body havingopposite lateral projections co-planar with the body, a longitudinalextension from the body formed to provide spaced, lubricant directingarms curved out of the plane of the body and each terminating in abevelled end, and plate-like elements on said lateral projections,adapted with said body to define a channel centrally of the body andopen at its ends, the body being centrally apertured in the zone of thechannel, and one of said lateral projections and the plate-like elementthereon being apertured therethrough, said member having the bodythereof and said lateral projections and plate-like elements th'ereon,disposed between said cap and rod bearing-half, with one of saidsecuring bolts extended through said body aperture and said dowelextended through the aperture of said apertured lateral projection andassociated plate like element, the member so disposed, having saidchannel open to the surface of the crank pin, and the longitudinal bodyextension providing said arms, in a position such that said arms dipinto said crankcase body of lubricant upon crankshaft rotation, and actto direct and deliver lubricant therefrom to the zone of said channel,for passage therethrough to the crank pin surface, whereby to effectlubrication of said crank pin.

5. As an article of manufacture, a device for the purpose described,comprising a sh'eet metal member formed to provide a planar body,opposite lateral projections on said body, plate-like elements on saidprojections cooperating with said body to define a channel, and saidmember further providing a continuation of said planar body, formed toprovide spaced arms each curved out of the plane of said body.

6. As an article of manufacture, a device for the purpose described,comprising a sheet metal member providing a planar body of predeterminedthickness, opposite lateral projections on said body, elements on saidlateral projections presenting inner opposed margins defining with thebody a channel, and means constituting a longitudinal continuation ofsaid body, forming spaced arms each terminating in a bevelled,knife-like end.

7. As an article of manufacture, a device for the purpose described,comprising a sheet metal member providing a planar body of predeterminedthickness, means carried by said body and formed to have greaterthickness than the thickness of the body, said means presenting inneropposed margins defining with the body a channel, and means constitutinga longitudinal continuation of said body, forming arms curved out of theplane of said body.

8. As an article of manufacture, a device for the purpose described,comprising a sheet metal member providing a planar body and alongitudinal continuation thereof, formed to provide curved arms, saidbody having opposite lateral projections coplanar therewith, andplate-like elements on said projections, cooperating with said body todefine a channel substantially longitudinally of the body, said bodybeing apertured therethrough in the zone of said channel.

9. As an article of manufacture, a device for the purpose described,comprising a planar member having a longitudinal extension formed toprovide curved arms, and plate-like elements in spaced relation on saidmember, formed to define with said member, a tapered channel, saidmember being apertured therethrough in the zone of said channel.

10. As an article of manufacture, a device for the purpose described,comprising a sheet metal member providing a planar body having lateralprojections and a longitudinal extension, the latter being formed toprovide spaced arms curved out of the plane of the body, plate-likeelements on said lateral projections, the inner opposed margins of saidelements cooperating in defining a tapered channel centrally of thebody, and said body being apertured therethrough in the zone of saidchannel.

FRANKLIN G. HOBART.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number

